Great shot Dwayne! Not sure if it is natural or a split tone rendition, but the blues and whites are wonderful. As to greater contrast, well, that's a matter of taste and I know from experience when you try to increase contrast where whites are present, it tends to blow out the white. And you are almost at that point in this image. I tend to favour natural renditons over highly processed images anyway. IMO, the less the better.
JMR